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Tie Modules
VecArray Implement array using vec()
SubstrArray Implement array using substr()
VirtualArray Implement array using a file
ShiftSplice Defines shift et al in terms of splice method
Would be nice to have
pack "(stuff)*"
Contiguous bitfields in pack/unpack
lexperl
Bundled perl preprocessor
Use posix calls internally where possible
gettimeofday (possibly best left for a module?)
format BOTTOM
-i rename file only when successfully changed
All ARGV input should act like <>
report HANDLE [formats].
support in perlmain to rerun debugger
regression tests using __DIE__ hook
reference to compiled regexp
lexically scoped functions: my sub foo { ... }
lvalue functions
regression/sanity tests for suidperl
Full 64 bit support (i.e. "long long"). Things to consider:
how to store/retrieve 32+ integers into/from Perl scalars?
32+ constants in Perl code? (non-portable!)
32+ arguments/return values to/from system calls? (seek et al)
32+ bit ops (&|^~, currently explicitly disabled)
The _r-problem: for all the {set,get,end}*() system database
calls (and a couple more: readdir, *rand*, crypt, *time,
tmpnam) there are in many systems the _r versions
to be used in re-entrant (=multithreaded) code.
Generalise Errno way of extracting cpp symbols and use that in
Errno and Fcntl (ExtUtils::CppSymbol?)
Possible pragmas
debugger
optimize (use less memory, CPU)
Optimizations
constant function cache
switch structures
foreach(reverse...)
Set KEEP on constant split
Cache eval tree (unless lexical outer scope used (mark in &compiling?))
rcatmaybe
Shrink opcode tables via multiple implementations selected in peep
Cache hash value? (Not a win, according to Guido)
Optimize away @_ where possible
"one pass" global destruction
Rewrite regexp parser for better integrated optimization
LRU cache of regexp: foreach $pat (@pats) { foo() if /$pat/ }
Vague possibilities
ref function in list context
make tr/// return histogram in list context?
Loop control on do{} et al
Explicit switch statements
built-in globbing
compile to real threaded code
structured types
autocroak?
Modifiable $1 et al
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